a question or statement intentionally phrased so as to require ingenuity in ascertaining its answer or meaning

they started asking riddles and telling jokes

speak in or pose riddles

he who knows not how to riddle

make many holes in (someone or something), especially with gunshot

his car was riddled by sniper fire

pass (a substance) through a large coarse sieve

for final potting, the soil mixture is not riddled

a large coarse sieve, especially one used for separating ashes from cinders or sand from gravel